Staple-fastener



(No Model.)

A H SWETT STAPLE FASTBNBR.

No. 589,584. Patented Sept. 7,1897.

UNITED STATES PATENT irren STAPLE-FASTENER.

SPECIFICATION-forming part of Letters Patent No. 589,584, datedSeptember 7', `31.897.

Application filed October l5, 1896. Serial No. 608,960- (No model.)

To alzi Awil/0m it may (fn/tecra:

Be it known 'that I, ARTHUR H. Swnrr, a citizen of the United States,residing at Chicago, in the county of Cook and State of lllinois, haveinvented a neuT and useful Improvement in Staple-Fasteners, of which thefollowing is a specification.

My invention relates to an improvement in fasteners designed for usemore especially in securing together the parts of boxes, Woodenshipping-cases, and the like.

My object is to provide a construction of fastener which may be cheaplyproduced, easily applied, and the retentive function of which shall beso great as to enable the auxiliary use of nails to be dispensed with.

In the accompanying drawings, Figure lis a plan View of a section of thepreferred form of blank from which my improved fastener is made; Fig. 2,a plan view of a fastener before it is bent to the staple form; Fig.3,'a vieivin side elevation of the perfected staple; Fig. 4, a sectiontaken at the line e on Fig. 2 and viewed in the direction of the ar row,and Figs. 5, 6, and 7 views showing modifications of structure.

To produce my improved fastener, I form it from a blank A, composed ofYa strip of metal comprising a web portion f, provided with edge beads,affording strengthening-ribs s s, which may be wires, though the blankis preferably a strip of metal rolled into the de sired shape,

B is a fastener which maybe stamped or otherwise formed from the blank Aby removing at its end portionsseotions of the web t to aiford thebifurcated prongs v T, each comprising at least two members. Theseprongs are preferably so formed that the adjacent edges of yeach pair ofthe members taper outwardly and are provided with serrations lr. Atornear the ends of the Web the prongs o' are bent at suitable angles(preferably right angles) to the body B' of the staple.

The wires or strengtheningribs s are preferably of the cressseetionshown in Fig. et; but they may be of any other suitable crosssection, asthat shown in Fig. 5, it being only essential to my invention thatprongfor1ning material of adequate rigidity be supplied in sufficientlength on the blank. The strengthening-ribs may or may not, therefore,extend throughout the entire length of the body of the staple.

Figs. 6 and 7 represent a modification of the device, in Which the bodyportion B is iat or flattened, as by rolling or stamping, and for somepurposes this construction is preferable to that shown in Figs. 2 and 3.

In applying the fastener to the corner of a box one set of prongs isdriven into the Wood at the proper place. The body of the fastener isthen bent over the corner of the box and the second set of prongs drivenin. IVhen the construction involves the tapering prongs and theserrations thereon, the effect is to force the members of the prongssomewhat farther apart as they vare driven into the wood, and thespringiness of the metal acts to force the teeth s against the wood toprevent Withdrawal. The result is that it is not possible to remove thefastener without dis` iiguring the box, so that any tampering there.-with could be readily detected, and herein is seen the accomplishment ofthat in the attaining of which it has heretofore been necessary toemploy a nail in connection with the fastener, the former being driventhrough the latter to produce a bur, which Would hinder Withdrawal ofthe prong.

Moreover, my improved fastener can be readily applied to a box in thosepositions in which the ordinary forms of fasteners could not beconveniently applied because their prongs would entend crosswise of thegrain.

lVhat Iclaim as new, and desire to secure by Letters Patent, is V l. Afastener comprising a body portion B formed of a web 't andstrengthening-ribs s, said strengtl1cning-ribs being extended beyond theends of the web and forming prongs fr, substantially as and for thepurpose set' forth.

2. A fastener, comprising a body portion B formed of a web andstrengthening-ribs at opposite sides and projecting beyond opposite endsof the web to form prongs fr, said prongs being tapered and serrated,substantially as and for the purpose set forth.

ARTHUR n; sWnT'T.

In presence of@- J. n. LEE, n. J. FROST.

